Publicis Sapient - Lead React.js Engineer

Description :

- You should be up to date with new specifications (different stages), and, using transpilers like Babel to use features from all stages

- Good understanding of creational and structural design patterns in JavaScript

- Experience working with Single Page Applications (SPA) with universal rendering capabilities.

- Good understanding of React.js, its core principles - lifecycle methods, virtual DOM etc.

- Understanding of one-way data flow and the Flux architecture.

- Understanding of stateful (container) vs stateless (presentational) components and how to break down the application page into components

- Core understanding of how Reacts state management works out of the box.

- Understanding of different CSS architectures that go hand-in-hand with React.js application development. Pros and cons of component-level CSS vs global and where to apply each

- Thorough understanding of Webpack bundler (version 2+).

- Good understanding of the Web Components standard.

- Hands-on experience with building Progressive Web Apps (PWAs) on any framework.

- Hands-on experience with Frontend Performance Optimization - especially in a React application with respect to resource loading strategy, CPU/Memory profiling on the browser.

- Hands-on experience with test-driven development using Jest or equivalent. Familiar with snapshot testing, code coverage. Experience working with utilities like Enzyme

- Experience using fluid grids, and building responsive/adaptive websites using Bootstrap etc.